.tab_loading {
	width: 3rem;
	height: 3rem;
	text-align: center;
	line-height: 3rem;
	background: #000;
	opacity: 0.8;
	color: #fff;
	border-radius: 10px;
	position: absolute;
	top: 4rem;
	left: 2rem;
}

.bg {
	height: 100%;
	width: 100%;
	background-color: #000;
	position:fixed;
	opacity:  0.5;
	z-index:400;
}